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P0174 Diagnostic Trouble Code Discussion for August 2010

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2002 Audi A6 Quattro 2.7L MIL Lamp on VIN: WAULD64B82
Hello Audi Experts... This car came in a few days ago with the above codes stored in that order. The car was very sluggish...original plugs and low fuel pressure. We replaced the plugs, fuel pressure regulator and air filter element and erased the codes. The ...
August 04, 2010
2002 Saturn Vue 3.0L Cuts out, MIL Lamp on VIN: 5GZCZ63B42
P0174: Fuel Trim System Lean (Bank 2). This car will reset these codes every week to 10 days. The customer says that when it happens the engine jerks and the MIL comes on. It does not stall or has any pattern to it. Then it runs fine but the MIL is on. It is always the same set of codes. When I tes...
August 04, 2010
1998 Ford Expedition XLT 4.6L Poor Idle Quality, Low power VIN: 1FMRU18WOW
P0174: Fuel system lean bank 2. Need help on this one badly. Have been trying different things for a week. Engine idles rough, low power on acceleration. Sets code for bank 2 lean. Long term adaptive fuel is +25 for bank 2 and about -10 for bank 1. Smoke tested for vacuum leaks. Dropped exha...
August 10, 2010
2004 Ford F-150 Heritage XLT 4.6L MIL Lamp on VIN: 2FTKF08W34
P0174: Bank 2 system lean. ... on p0171 and p0174 bank 1 and 2 system lean. Found vacuum leak and replace that vacuum line. After repair i drove vehicle for 15 minutes and then let sit outside running for another 30 minutes, check engine light didnt come back on. Customer picked vehicle...
August 21, 2010
2005 Ford Mustang GT 4.6L MIL Lamp on VIN: 1ZVHT82H75
P0174: lean bank2. ... bcm issues (delt with) aftermarket programmer removed stock/latest reflash, aftermarket alarm removed ,old lojack removed,smoke tested intake with pcvand vent plugged no leaks detected,replaced fuel filter-some dirt-not plugged-2 motorcraft maf,frp reads a...
August 21, 2010
1998 Ford Explorer XL 4.0L MIL Lamp on VIN: 1FMZU32X5W
P0174: Lean Bank 2. ... light came on. Scaned for codes, found P0171 & P0174 lean bank 1 & 2. When I smoke the engine,smoke agressively comes from the rear of the oil pan, like where you would put some sealer during installation. The short term fuel counts are both @ 38. ...
August 24, 2010
2005 Ford Mustang GT 4.6L MIL Lamp on VIN: 1ZVHT82H75
P0174: lean bank2. ... bcm issues (delt with) aftermarket programmer removed stock/latest reflash, aftermarket alarm removed ,old lojack removed,smoke tested intake with pcvand vent plugged no leaks detected,replaced fuel filter-some dirt-not plugged-2 motorcraft maf,frp reads a...
August 25, 2010
2006 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPW14556
P0174: Lean bank two. ... light. P0171 p0174 lean both banks. Engine has aftermarket aem cold air intake. Customer claims it has been on since new without a problem. My long term fuel trims are maxed out +25. I have installed a fuel pressure gauge inline and it is within specs. I s...
August 25, 2010
2004 Cadillac DeVille 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y44
P0174: Fuel Trim System Lean (Bank 2). OK so SES light is on & off sporadically for past couple of weeks. Strangely enough it passed Maryland State Emissions Testing just a few weeks ago. I do not have a Gas analyzer sorry for that, I know it would be helpful to know what the gases are doing. (...
August 26, 2010
2004 Cadillac DeVille 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y44
P0174: Fuel Trim System Lean (Bank 2). OK so SES light is on & off sporadically for past couple of weeks. Strangely enough it passed Maryland State Emissions Testing just a few weeks ago. I do not have a Gas analyzer sorry for that, I know it would be helpful to know what the gases are doing. (...
August 28, 2010
2000 Chevrolet Express 1500 4.3L MIL Lamp on VIN: 1GBFG15W6Y
P0174: Fuel Trim System Lean (Bank 2). hello fellow technicians. truck came in for misfire. found 4 codes listed. also i dont understand why i have a a.i.r code, this truck has no a.i.r system. atleast no relay, fuse or pump. well anyways wires were arcing and plugs were .030 worn over gap. replace...
August 30, 2010
2002 Audi A6 Quattro 2.7L MIL Lamp on VIN: WAULD64B82
Hello Audi Experts... This car came in a few days ago with the above codes stored in that order. The car was very sluggish...original plugs and low fuel pressure. We replaced the plugs, fuel pressure regulator and air filter element and erased the codes. The ...
August 04, 2010
2002 Saturn Vue 3.0L Cuts out, MIL Lamp on VIN: 5GZCZ63B42
P0174: Fuel Trim System Lean (Bank 2). This car will reset these codes every week to 10 days. The customer says that when it happens the engine jerks and the MIL comes on. It does not stall or has any pattern to it. Then it runs fine but the MIL is on. It is always the same set of codes. When I tes...
August 04, 2010
1998 Ford Expedition XLT 4.6L Poor Idle Quality, Low power VIN: 1FMRU18WOW
P0174: Fuel system lean bank 2. Need help on this one badly. Have been trying different things for a week. Engine idles rough, low power on acceleration. Sets code for bank 2 lean. Long term adaptive fuel is +25 for bank 2 and about -10 for bank 1. Smoke tested for vacuum leaks. Dropped exha...
August 10, 2010
2004 Ford F-150 Heritage XLT 4.6L MIL Lamp on VIN: 2FTKF08W34
P0174: Bank 2 system lean. ... on p0171 and p0174 bank 1 and 2 system lean. Found vacuum leak and replace that vacuum line. After repair i drove vehicle for 15 minutes and then let sit outside running for another 30 minutes, check engine light didnt come back on. Customer picked vehicle...
August 21, 2010
2005 Ford Mustang GT 4.6L MIL Lamp on VIN: 1ZVHT82H75
P0174: lean bank2. ... bcm issues (delt with) aftermarket programmer removed stock/latest reflash, aftermarket alarm removed ,old lojack removed,smoke tested intake with pcvand vent plugged no leaks detected,replaced fuel filter-some dirt-not plugged-2 motorcraft maf,frp reads a...
August 21, 2010
1998 Ford Explorer XL 4.0L MIL Lamp on VIN: 1FMZU32X5W
P0174: Lean Bank 2. ... light came on. Scaned for codes, found P0171 & P0174 lean bank 1 & 2. When I smoke the engine,smoke agressively comes from the rear of the oil pan, like where you would put some sealer during installation. The short term fuel counts are both @ 38. ...
August 24, 2010
2005 Ford Mustang GT 4.6L MIL Lamp on VIN: 1ZVHT82H75
P0174: lean bank2. ... bcm issues (delt with) aftermarket programmer removed stock/latest reflash, aftermarket alarm removed ,old lojack removed,smoke tested intake with pcvand vent plugged no leaks detected,replaced fuel filter-some dirt-not plugged-2 motorcraft maf,frp reads a...
August 25, 2010
2006 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPW14556
P0174: Lean bank two. ... light. P0171 p0174 lean both banks. Engine has aftermarket aem cold air intake. Customer claims it has been on since new without a problem. My long term fuel trims are maxed out +25. I have installed a fuel pressure gauge inline and it is within specs. I s...
August 25, 2010
2004 Cadillac DeVille 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y44
P0174: Fuel Trim System Lean (Bank 2). OK so SES light is on & off sporadically for past couple of weeks. Strangely enough it passed Maryland State Emissions Testing just a few weeks ago. I do not have a Gas analyzer sorry for that, I know it would be helpful to know what the gases are doing. (...
August 26, 2010
2004 Cadillac DeVille 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y44
P0174: Fuel Trim System Lean (Bank 2). OK so SES light is on & off sporadically for past couple of weeks. Strangely enough it passed Maryland State Emissions Testing just a few weeks ago. I do not have a Gas analyzer sorry for that, I know it would be helpful to know what the gases are doing. (...
August 28, 2010
2000 Chevrolet Express 1500 4.3L MIL Lamp on VIN: 1GBFG15W6Y
P0174: Fuel Trim System Lean (Bank 2). hello fellow technicians. truck came in for misfire. found 4 codes listed. also i dont understand why i have a a.i.r code, this truck has no a.i.r system. atleast no relay, fuse or pump. well anyways wires were arcing and plugs were .030 worn over gap. replace...
August 30, 2010